光的速度和眼光就像太阳光照到地球需要8分钟,你一睁眼就能看见太阳.如果光不往远处射,你还是能一眼看见,这里面没有速度可言.比如远处有一个电灯,它一亮你就能看见,就算光速比人走路
来源:学生作业帮助网 编辑:作业帮 时间:2024/11/15 12:31:08
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